%{
Copyright 2018 Google Inc. All Rights Reserved.

Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at

    http://www.apache.org/licenses/LICENSE-2.0

Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS-IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
%}

function [n, m] = getnm(l)
%GETNM Computes spherical harmonic degree and order from Ambisonic Channel Number.
%
%   input:
%
%   l - Ambisonic Channel Number as defined in http://ambisonics.ch/
%
%   output:
%
%   n - Spherical harmonic degree (aka Ambisonic order).
%   m - Spherical harmonic order (aka Ambisonic degree).

n = floor(sqrt(l));
m = l-n.^2-n;

end
